Method of casting knuckles for car-couplings.



B. E. HAUGH. METHOD OF CASTING KNUGKLES FOR APPLICATION FILED AUG.

OAR COUPLINGS.

11,1910. RENBV/"EI'!SEPTA),1918v Patented Nov. 111;, 1913.

1 IN Ejuucnloz @msvy BENJAMIN I. HAUGH, 0F ANDERSON, INDIANA.

METHOD OF CASTING KNUCKLES FOR GAR-COUPLINGS.

Specification of Letters Patent.

Patented Nov. 1 1, 1913.

Application filed-August 1'1, 1910, Serial No. 576,712. Renewed September 9, 1913. Serial Ito. 788,936.

Too 1011 omit may concern:

Be it known thatI, BENJAMIN *F. HAUGH, a citizen of the United States, residing at Anderson, in the county of Madison and State of Indiana, have invented certain new and useful Improvements in Methods of Casting Knuckles for Car-Couplings, of I p into the marks left by the rib. b of pattern which the following is a specification.

In the casting of knuckles for car couplers containing insert wearingrstrips of hardened metal, as shown and described in Reissue Patent No. 11,704, of- November 20, 'l898, considerable difficulty has been experienced in locating said insert strips in position to conform accuratel to the contour of the draft face of the nuckle and on the exact draft line. That said strips shall be so located is of great importance in/the use and service of the knuckle, and the careful work of ex ert molders has been required to secure t e desired result.

The object of my present invention is to simplify the process of castin such knuckles so that said inserts may e accurately located by means that can be employed by any one of ordinary skill, the work greatly facilitated and the expense incident thereto reduced, all as will be hereinafter more fully described and claimed.

Referring to the accompanying drawings which are made a part hereof and on which similar reference characters indicate similar parts, Figure 1 is a plan view of a moldformed for the casting of knuckles of the character in question, showing the selfhardening insert wearin plates described in said atent, secured 1n proper position therein, ig. 2 a view showing a portion of the pattern used to form said mold, Fig. 3 a perspective View of one of said insert plates, and Fig. 4 a similar view of a complete knuckle formed according to my. improved method. y

In said drawings the portions marked A represent the mold, B the pattern, 0 the insert plates, and D the finished knuckle.

In carrying out said invention the mold A used is of the same general character usually employed and formed by packing the sand around the pattern within the flask A, in the usual manner. On the pattern B, however, I form a point, or rib b, on the exact draft line of the knuckle so that when said pattern is withdrawn from the send a mark is left in said sand indicating the said draft line and the location of the cen' said insert plates 0 I form a notch, in ex-' actly midway of its width, or-direc'tly in line with what is intended for the draft line of theknuckle wearing face. I then anchor each insert within the mold by inserting anchor pins, or nails, 0, through said notches in thesand. By this means any one of ordinary skill, who can see the marks, can readily secure the insert strips, or plates, in

position in the mold so thatvwhen the knuckle is cast they will conform exactly to the correct contour of the knuckle and will be so located as to take the draft ,and' wear along the natural line and at the proper position on the face of said plates. By this means the molds are formed with much greater rapidity, and labor of a lower grade of skill and less expensive character can be employed for the purpose, while the result secured vis absolutely accurate at all times, a result which could not always be secured by the old method, even with the best skill and care employed. After the knuckle is withdrawn from the mold the projecting ends of the anchor pins, or nails, may be cut off, as indicated in Fi .3, leaving a smooth wearin surface, per ectly reinforced with the sel hardening metal, as fully disclosed in my patent above mentioned.

Instead of two plates being used in each knuckle, as indicated, the insert may be a single plate, is preferred, or any other number found appropriate and desired.

It will be noted that the insert strip, or plate, does not extend to the extreme ends of the knuckle, in either direction, and that its edges are ta ered, so that it is secured in place by the so ter metal of the surroundin pgrts of the casting, which overhang said e es.

aving thus fully described my said invention, what I claim as new and desire to secure by LettersPatent, is:

1. The method of casting car coupler knuckles having insert wearing plates, which consists in forming on the pattern marking points directl on the center or draft line of the face 0' the knuckle, forming notches in the ends of the wearing plates to be inserted on their center lines, securing said plates in the mold by anchor pins inserted into sand at the points so marked by the pattern and enga ing with the notches in said plates, an then pouring the molten metal into said mold, substan-' tially as set forth.

2. The method of casting car coupler knuckles having hardened insert plates, which consists in forming a pattern with marking points on the mold to determine the line of draft securing said insert plates to said mold by anchor devices inserted in the points so marked and engaging with said plates, and pouring the molten metal into said mold surrounding said insert plates so secured therein, and then cutting the projecting ends of said anchor devices from the face of the knuckle after being formed, substantially as set forth 3. The method of casting car coupler knuckles with hardened insert plates in its wearing face comprising fixing by the form of the mold the osition of said insert plates in the mold on t e draft line of the knuckle and securing them by anchor pins engaging both with said plates and with the mold within the lines of its ends then pouring the metal to surround the edges of said plates, substantially as set forth.

In witness whereof, I, have hereunto set my hand and seal at Anderson, Indiana, this 6th day of August, A. D. nineteen hundred and ten.

BENJAMIN F. HAUGH. 

